usb: renesas_usbhs: Add Renesas USBHS common code

Renesas SuperH has USBHS IP which can switch Host / Function.
This driver is designed so that Host / Function may dynamically change.
This patch add usb/renesas_usbhs and common code for SuperH USBHS.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 149 insertions, 0 deletions

diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
new file mode 100644
index 000000000000..565bca3aa440
--- /dev/null
+++ b/include/linux/usb/renesas_usbhs.h
@@ -0,0 +1,149 @@
+/*
+ * Renesas USB
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#ifndef RENESAS_USB_H
+#define RENESAS_USB_H
+#include <linux/platform_device.h>
+#include <linux/usb/ch9.h>
+
+/*
+ * module type
+ *
+ * it will be return value from get_id
+ */
+enum {
+        USBHS_HOST = 0,
+        USBHS_GADGET,
+        USBHS_MAX,
+};
+
+/*
+ * callback functions table for driver
+ *
+ * These functions are called from platform for driver.
+ * Callback function's pointer will be set before
+ * renesas_usbhs_platform_callback :: hardware_init was called
+ */
+struct renesas_usbhs_driver_callback {
+        int (*notify_hotplug)(struct platform_device *pdev);
+};
+
+/*
+ * callback functions for platform
+ *
+ * These functions are called from driver for platform
+ */
+struct renesas_usbhs_platform_callback {
+
+        /*
+         * option:
+         *
+         * Hardware init function for platform.
+         * it is called when driver was probed.
+         */
+        int (*hardware_init)(struct platform_device *pdev);
+
+        /*
+         * option:
+         *
+         * Hardware exit function for platform.
+         * it is called when driver was removed
+         */
+        void (*hardware_exit)(struct platform_device *pdev);
+
+        /*
+         * option:
+         *
+         * Phy reset for platform
+         */
+        void (*phy_reset)(struct platform_device *pdev);
+
+        /*
+         * get USB ID function
+         *  - USBHS_HOST
+         *  - USBHS_GADGET
+         */
+        int (*get_id)(struct platform_device *pdev);
+
+        /*
+         * get VBUS status function.
+         */
+        int (*get_vbus)(struct platform_device *pdev);
+};
+
+/*
+ * parameters for renesas usbhs
+ *
+ * some register needs USB chip specific parameters.
+ * This struct show it to driver
+ */
+struct renesas_usbhs_driver_param {
+        /*
+         * pipe settings
+         */
+        u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
+        int pipe_size; /* pipe_type array size */
+
+        /*
+         * option:
+         *
+         * for BUSWAIT :: BWAIT
+         * */
+        int buswait_bwait;
+};
+
+/*
+ * option:
+ *
+ * platform information for renesas_usbhs driver.
+ */
+struct renesas_usbhs_platform_info {
+        /*
+         * option:
+         *
+         * platform set these functions before
+         * call platform_add_devices if needed
+         */
+        struct renesas_usbhs_platform_callback  platform_callback;
+
+        /*
+         * driver set these callback functions pointer.
+         * platform can use it on callback functions
+         */
+        struct renesas_usbhs_driver_callback    driver_callback;
+
+        /*
+         * option:
+         *
+         * driver use these param for some register
+         */
+        struct renesas_usbhs_driver_param       driver_param;
+};
+
+/*
+ * macro for platform
+ */
+#define renesas_usbhs_get_info(pdev)\
+        ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
+
+#define renesas_usbhs_call_notify_hotplug(pdev)                         \
+        ({                                                              \
+                struct renesas_usbhs_driver_callback *dc;               \
+                dc = &(renesas_usbhs_get_info(pdev)->driver_callback);  \
+                if (dc)                                                 \
+                        dc->notify_hotplug(pdev);                       \
+        })
+#endif /* RENESAS_USB_H */